Musnad Ahmad 947:11

Abu Amir narrated to us, Hisham bin Sa’d narrated to us, from Zayd bin Aslam, from ‘Ata’ bin Yasar, from Abu Waqid al-Laythi, who said: We used to come to the Prophet, may Allah bless him and grant him peace, when revelation was sent down upon him, and he would speak to us. He said to us one day: "Indeed, Allah has said: 'We have sent down wealth for the establishment of prayer and the giving of zakat. And if the son of Adam had a valley, he would love for there to be a second one with it; and if he had two valleys, he would love for there to be a third one with them. And nothing fills the belly of the son of Adam except dust, then Allah turns in forgiveness to whoever repents.'"